7920928 has 12 divisors (see below), whose sum is σ = 15594390. Its totient is φ = 3960448.

The previous prime is 7920893. The next prime is 7920949. The reversal of 7920928 is 8290297.

7920928 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6210064 + 1710864 = 2492^2 + 1308^2 .

It is a super-2 number, since 2×7920928² = 125482200762368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123733 + ... + 123796.

Almost surely, 2^7920928 is an apocalyptic number.

It is an amenable number.

7920928 is a deficient number, since it is larger than the sum of its proper divisors (7673462).

7920928 is a wasteful number, since it uses less digits than its factorization.

7920928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247539 (or 247531 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7920928 is about 2814.4143262853. The cubic root of 7920928 is about 199.3388837008.

It can be divided in two parts, 792092 and 8, that added together give a square (792100 = 890²).

The spelling of 7920928 in words is "seven million, nine hundred twenty thousand, nine hundred twenty-eight".